I’ve recently performed a fresh\clean install of R, RTools and RStudio on Windows to their latest/newest versions and then installed Stan from CRAN. When doing so, I’ve found that when trying to fit the standard 8schools model (as in the Getting Started page), the compilation time is ridiculously long (on the order of five to ten minutes, or alternatively ‘8minutes’). This happens regardless of whether I configure the C++ toolchain (according to the instructions on the Getting Started page) or not.
Once the program has been compiled, sampling doesn’t take anytime at all, but making any type of small changes to the Stan script (e.g such as by changing the prior variance) leads to another lengthy recompilation time.
I’m therefore appreciate any suggestions as to what I can try to diagnose what could be causing this!
Operating System: Windows 10
Interface Version: RStan 2.19.3